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. 2021 May 26;789:148043. doi: 10.1016/j.scitotenv.2021.148043

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Fig. 5 — Evaluation of the precision of the calibration curve with dPCR as a means to validate qPCR results. CI = confidence interval; Ct = cycle threshold. The left y-axis represents the precision of the 95% confidence interval after running the calibration curve with dPCR. The right y-axis represents the Ct-values measured at the different concentration levels with qPCR.